Online. Qinhuangdao, referred to as "Qin" for short, also known as the port city, is a prefecture-level city under the jurisdiction of Hebei Province, and an important port city in China Bohai Rim approved by the State Council. There are four seafarers' certificates in this place, which are the certificates for seafarers to work on board. It can be updated online, after online training, and can be boarded normally.